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Search: Posts Made By: longpete
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01-12-24, 12:30 PM
Replies: 7
Views: 931
Posted By longpete

I use linkglyde chains on all my 11 speed bikes....

I use linkglyde chains on all my 11 speed bikes. LG500 chain is cheap. A bit stronger than other Shimano 11 speed chains. On our Etandem we started in 2000 with black and gold wippermann connex...
Forum: Road Cycling
09-11-23, 11:21 AM
Replies: 1,302
Views: 61,696
Posted By longpete

Emtb tandem. 11 speed DI2. Oiled chains : one XT...

Emtb tandem. 11 speed DI2. Oiled chains : one XT 11-42 cassette and 3 wipperman black-gold chains worn 0.5+casette skipping at 3000km. Chains did break frequently.
Real mess when broken oiled chain...
03-25-23, 12:26 AM
Replies: 77
Views: 7,511
Posted By longpete

What his testing proves is that the rolling...

What his testing proves is that the rolling resistance increases with the load. This means single bikes : two times load of 80 kg same effect on rolling resistance. Each wheel has a load of...
03-24-23, 09:17 AM
Replies: 77
Views: 7,511
Posted By longpete

"read :...

"read : https://www.bicyclerollingresistance.com/specials/crr-load-testConclusionOur simple conclusion is that the CRR of bicycle tires under different loads is non-linear and increases at higher...
02-23-23, 08:22 AM
Replies: 7
Views: 1,071
Posted By longpete

Steel e-bike chainrings and hot wax wit several...

Steel e-bike chainrings and hot wax wit several chains. ( at least 2 drive chains, 2 timing chains)
We use cheaper shimano linkglide chains. (suited for 10 to 11speeds). Even Ebikes chains with 136...
02-16-23, 02:00 AM
Replies: 14
Views: 1,515
Posted By longpete

Narrower chains have narrower plates and narrower...

Narrower chains have narrower plates and narrower pins. That's our problem with 11 speed chains. Links start to come loose from the pins before the chain is worn 5 mm. So I prefer a 8/9 speed chain...
11-18-22, 09:52 AM
Replies: 21
Views: 1,451
Posted By longpete

Longer life chainwheels and cassette especiallly...

Longer life chainwheels and cassette especiallly with 11 and 12 speed where a chain worn around 0.5
causes a lot of wear. Combined wit wax i tripled the life of my driving components. Onroad+dry...
11-17-22, 01:36 AM
Replies: 21
Views: 1,451
Posted By longpete

Yes

Yes
11-16-22, 10:44 AM
Replies: 21
Views: 1,451
Posted By longpete

11 speed chains on a tandem certainly with di2...

11 speed chains on a tandem certainly with di2 last less long but 1250 is very short for onroad. Try using 3 chains and change every 300 km or wet ride. When you live in a dry climate wax your chain...
10-13-22, 11:08 AM
Replies: 77
Views: 7,511
Posted By longpete

Riding a tandem is different. Offroad even more....

Riding a tandem is different. Offroad even more. We ride a fullsuspension even onroad. Different factors play, but most important : all tandems are different, singles are mostly the same.

That's...
10-12-22, 01:04 PM
Replies: 77
Views: 7,511
Posted By longpete

Interesting thread. I think the bigegr rolling...

Interesting thread. I think the bigegr rolling resistance(prportional wit the weight) has a big part in making tandems slower uphill. Also the differnce in power and experience between the tow...
10-12-22, 05:23 AM
Replies: 77
Views: 7,511
Posted By longpete

Where did you see thes figures? Caused by the...

Where did you see thes figures? Caused by the longer chain?
08-23-22, 02:39 AM
Replies: 77
Views: 7,511
Posted By longpete

With the tandem I'm slower but happier. Rolling...

With the tandem I'm slower but happier. Rolling resistance much higher(rises proportionally with weigth). Steep climbs are hard although traction is higher on tandem. (rolling resistance and and her...
07-22-22, 08:18 AM
Replies: 52
Views: 13,498
Posted By longpete

I think that's nonsense. Could you still brake...

I think that's nonsense. Could you still brake before you tried to change the pads? Breaking= moving pistons. That the heat damaged the seals this is possible.
Did you trie to push the pistons out...
06-27-22, 06:51 AM
Replies: 6
Views: 1,241
Posted By longpete

We also ride an EP8. You ride in eco set with low...

We also ride an EP8. You ride in eco set with low NM and doing 85 to 95 rpm a bit more than 10% faster with motor on on the flat.
Only if we do really long rides with luggage and with a lot o...
06-22-22, 07:47 AM
Replies: 6
Views: 992
Posted By longpete

talking about 11 speed because we ride DI2....

talking about 11 speed because we ride DI2. 46-34 even onroad with motor not for us. 34-42 on long ofroad climbs with gear foor several days still is too heavy for us.
34-46 was not optimal on 2000...
06-22-22, 07:33 AM
Replies: 8
Views: 911
Posted By longpete

Stay away from Race Face. I like the shimano...

Stay away from Race Face. I like the shimano deore. Cheap, easy to replace. When the bottom bracket is " cut flat" with the rights tools and u apply a lot of grease to protect aganist water
thay...
06-13-22, 06:49 AM
Replies: 204
Views: 90,853
Posted By longpete

Use Ebike box(some come with wheels mounted and...

Use Ebike box(some come with wheels mounted and are large enough).
06-13-22, 06:47 AM
Replies: 37
Views: 6,260
Posted By longpete

Combine disc and rimbrakes against heat. Disc...

Combine disc and rimbrakes against heat. Disc brake hub and rimbrake rim. On a road frame maybe impossible. Unless you mount a flat bar. Widest possible tyres. 22cm disks: ask if your frame and...
05-27-22, 09:08 AM
Replies: 52
Views: 13,498
Posted By longpete

They're not unsafe if you keep in mind their...

They're not unsafe if you keep in mind their limits. Same goes for tubeless. With rim brakes I had inner tyres that melted. With inner tyres I had tyre ventiles ripped of(even with a lot of talkum...
05-24-22, 08:35 AM
Replies: 52
Views: 13,498
Posted By longpete

Xt +xtr ice tech rotors are not up for tandem...

Xt +xtr ice tech rotors are not up for tandem mountain use. The alu between the rotor melts at high temperatures. Seen myself on halfbikes on 2000 altimeter single track descent. The heavier the...
07-07-21, 04:22 AM
Replies: 22
Views: 5,599
Posted By longpete

We ride a fullsuspenion tandem with Shimano EP8...

We ride a fullsuspenion tandem with Shimano EP8 motor.
Fork choice is relied with total drivers weight(al gear included) Ours is 155.
The only fork that can handle this weight is the Rock Shox...
06-18-21, 10:30 AM
Replies: 16
Views: 2,897
Posted By longpete

The wider the tire the more brake power it has....

The wider the tire the more brake power it has. Magura MT7 with depending where we ride 180,20.3 or 22 cm disks.Not only the diamteer plays a role, also the weight of the disks.
Magura MDR C ...
05-31-21, 08:38 AM
Replies: 13
Views: 3,064
Posted By longpete

We also have a front motor. I remind her a lot ...

We also have a front motor.
I remind her a lot about the timing of the cranks. She has to ask me to stop pedalling in 9 o'clock position so that she can synchronize the cranks.
To be honest...
05-31-21, 07:03 AM
Replies: 13
Views: 3,064
Posted By longpete

We also have a front motor. I remind her a lot ...

We also have a front motor.
I remind her a lot about the timing of the cranks. She has to ask me to stop pedalling in 9 o'clock position so that she can synchronize the cranks.
To be honest...
05-27-21, 06:36 AM
Replies: 13
Views: 3,064
Posted By longpete

Rolling resistance on tandem is higher...

Rolling resistance on tandem is higher (weight).(Riders+tandem+wheels).
Air resistance is higher : bar higher(also wider?) and frontal surface a bit higher, also frame tubes and other on tandem...
05-18-21, 12:57 AM
Replies: 17
Views: 3,495
Posted By longpete

Weight I suppose. More weight (gravity³)combined...

Weight I suppose. More weight (gravity³)combined with less frontal surface(air resistance²). In onroad descents I also use 17.5 cm dropper seatpost with the tandem and I go a lot faster on the same...
05-18-21, 12:49 AM
Replies: 17
Views: 3,495
Posted By longpete

Always the rear tire, but if there's more weight...

Always the rear tire, but if there's more weight on the front then the front tire wears faster and the rear a bit slower than with a normal 60/40 distribution.(in my experience). Normally it's 1.75...
05-17-21, 03:11 AM
Replies: 17
Views: 3,495
Posted By longpete

[QUOTE=UCantTouchThis;22037264]Not sure about...

[QUOTE=UCantTouchThis;22037264]Not sure about your tandem, but ours, the stoker seems to sit more on the rear tire than the captain does on the front. So I don't see why it would be any different...
05-17-21, 02:43 AM
Replies: 17
Views: 2,663
Posted By longpete

"Rolf Prima Tandem Wheels, Gates Carbon Drive,...

"Rolf Prima Tandem Wheels, Gates Carbon Drive, and a co-motion carbon fork)" all of these are not worth their money. Second hand tandems are hard to sell, The more expensive the more difficult....
05-17-21, 02:32 AM
Replies: 10
Views: 2,471
Posted By longpete

We use shimano Deore 135 Hubs 32 spokes dt swiss...

We use shimano Deore 135 Hubs 32 spokes dt swiss comp jbend on road tandem and 28 straight spokes dt 350 (dt alpine spokes) and Mavic(flat spokes) on E-MTB Tandem. Weight riders+gear 155. In the...
04-26-21, 08:35 AM
Replies: 17
Views: 3,495
Posted By longpete

Weight has a big influence on wear caused by...

Weight has a big influence on wear caused by braking. And when I compare the wear of similar tyres on our tandem and my MTB there's definitely an influnce of weight.
Rolling resistance also...
04-23-21, 07:15 AM
Replies: 4
Views: 1,682
Posted By longpete

Considering Rock Shox gold 35 : *travel can be...

Considering Rock Shox gold 35 :
*travel can be changed with spacers between 100 and 160.
*2300 grams :a lot of material means mostly stiffer(inner diameter of 32 forks, so more progressive and...
04-23-21, 06:28 AM
Replies: 7
Views: 2,257
Posted By longpete

Team weight 150,E tandem 29.Tubeless 35 rims 2.6...

Team weight 150,E tandem 29.Tubeless 35 rims 2.6 27.5 '' tires. Rear 1.7 to 1.8 bar, front 1.7 to 1.9.
Muc off sealant. Better than Stan's for sealing rim tape leakage.. Continental and Schwalbe...
04-23-21, 06:17 AM
Replies: 17
Views: 3,495
Posted By longpete

Rear tire. But captain 98 and stoker 51, weigth...

Rear tire. But captain 98 and stoker 51, weigth distribution 53% front 47 r.ear. This means more rolling resistance up front than solo bike.
Tires wear out faster on tandem than solo bike....
03-24-21, 07:06 AM
Replies: 12
Views: 2,910
Posted By longpete

Wheels for Ebikes go up to 150 kg eg DT Swiss...

Wheels for Ebikes go up to 150 kg eg DT Swiss H....series
Mavic EDeemax allows 180 kg.
Ryde Andra also has some very strong rims.
03-22-21, 10:59 AM
Replies: 4
Views: 1,682
Posted By longpete

Update :My conclusions : *forget about...

Update :My conclusions :
*forget about fox+marzocchi for tandems : maximum allowed pressure way too low for 150 kg or more : over 40% sag, a lot of compression damping reduces sag to 36% .
I tried...
03-22-21, 03:44 AM
Replies: 21
Views: 7,629
Posted By longpete

OIffroad stiffer sidewalls give more steeering...

OIffroad stiffer sidewalls give more steeering stability with large tires in tubeless with lower pressure and stiffer sidewals(especially in the rear )prevent burping. I ride 2.6 front(1.9 bar and...
03-22-21, 03:25 AM
Replies: 12
Views: 2,058
Posted By longpete

We use around 50 codes and words or a combination...

We use around 50 codes and words or a combination of coedes and words(eg bump one).(so many because offroad tandeming is more complex). Numbers are easier than words when there is a lot of wind.
We...
03-22-21, 02:42 AM
Replies: 9
Views: 3,505
Posted By longpete

Terry is a good advice : not expensive and...

Terry is a good advice : not expensive and comfortable. If stoker sits upright most pressure is on the sit bones. Than a large saddle wit short nose with a lot of padding could work fine.
After the...
03-22-21, 02:25 AM
Replies: 7
Views: 3,068
Posted By longpete

You need one wirh a velcro strap around the stem,...

You need one wirh a velcro strap around the stem, works fine with us.Easy to sew it one yourself on any bag if not provided. Make stitches waterproof with tent seam products or someting like that....
03-13-21, 10:38 AM
Replies: 40
Views: 6,215
Posted By longpete

i use resin front brake, sintered rear(more heat,...

i use resin front brake, sintered rear(more heat, risk fading) with 22 disk
03-11-21, 03:04 AM
Replies: 40
Views: 6,215
Posted By longpete

I've had heat problems with rim brakes: velox rim...

I've had heat problems with rim brakes: velox rim tape came loose or plastic ones got hard and because of that small tears appear which causes a whole in the inner tube.
But if u ride on the flat...
03-11-21, 02:51 AM
Replies: 6
Views: 1,704
Posted By longpete

Tandem cranksets that shift perfect and don't...

Tandem cranksets that shift perfect and don't drop the chain, with hollow axles are expensive and hard to find. Timing and driving chainwheels on the right side makes the choice much larger.
My...
03-11-21, 02:22 AM
Replies: 21
Views: 5,309
Posted By longpete

I *remove calipers *roll up the hose and...

I
*remove calipers
*roll up the hose and attach it with tape
*put something(littlle plastic thing comes with the brakes most of the time, but anything will do) between the pistons
*close the...
03-05-21, 03:31 AM
Replies: 42
Views: 19,016
Posted By longpete

Same here. With the tandem I have to pay more...

Same here. With the tandem I have to pay more attention to the track.
Difficult to correct mistakes. Offroad with a solo bike falling most of the time no problem, with a tandem it almost allways...
03-02-21, 03:53 AM
Replies: 0
Views: 972
Posted By longpete

Mavic E-deemax S35 BOOST

Anyone using these wheels on a (e-)tandem? Maximum system weight is 180kg. But only 28 spokes.
No rim tape required for tubeless.
03-01-21, 08:06 AM
Replies: 42
Views: 19,016
Posted By longpete

An E-tandem makes a lot of sense but not for...

An E-tandem makes a lot of sense but not for everyone. And riding a E-tandem is a completly different experience than riding two Ebikes.
My partner and me each on a E-mountainbike? That would be a...
01-26-21, 01:45 PM
Replies: 42
Views: 10,042
Posted By longpete

Why not try a small mtb bar(flat or low rizer)...

Why not try a small mtb bar(flat or low rizer) wit a lot of backsweep with a short stem?
01-26-21, 01:38 PM
Replies: 18
Views: 3,026
Posted By longpete

In my experience the optimum rolling resistance...

In my experience the optimum rolling resistance with a schwalbe marathon comes with a 37-622 tyre, It rises once u go to 40-622. Pressure is 5 to 6bars.
But if u lower the pressure for more...
Showing results 1 to 50 of 54
 


 
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