DesmoDog

Yeah... this bike is done. I've already put too much money into it and it works just fine. I've moved on to other projects and all that's left with this one is riding it!

Cabo9302

Hello all. Newbie here with a question about the Schwinn Sanctuary 7. Are the pedal threads all standard on these or all bikes? I just purchased a new Sanctuary 7 from Amazon (about $310) and just received it this week. Upon assembly, I noticed the pedals seem very cheaply made, a plastic-like material. Because I'm not a small guy, I thought I'd upgrade to an alloy material pedal set off Amazon, but I wanted to make sure they will fit my bicycle. They say they are 9/16" thread? Everything on this bike on assembly is metric, so I'm sceptical. Thanks in advance.

SkinGriz

You need a 1/2” pedal. The metal spindle inside will bend before the plastic breaks (most likely).

How big are you? I’d run the pedals it came with until they bent. It might take more force than you realize.

If you want a pedal with more grip, that’s a different reason. Try the Odysee Twisted pedal in 1/2”.

Cabo9302

I'm 6'2", 320 lbs. I'm afraid I will actually break the pedal shaft if I stand up to crank down like on a hill, but I suppose I can try them out and get a better feel for them first. Thanks for your response.

Schweinhund

You'll twist the crank before you'll bend ody's.

Schweinhund

At your weight, you might consider something like this
https://www.bmxguru.com/collections/...bottom-bracket ody pedals are still your best bet, but these cranks are way stronger than stock. you'll need 9/16ths pedals for them.

SkinGriz

I ran GT 180mm cranks similar to these on my BMX bike as a teenager. Some of my friends ran Profile cranks of a similar design.

These types of cranks can take an insane amount of abuse. The frame will buckle before the cranks fail.

Not all one piece cranks are weak. Some are even chromo and were originally intended for BMX or light abuse. It just depends.

Schweinhund

Stop right there. No they are not. The original cromo crank is the schwinn. I bent everything right down to the 1980's Takagi which was arguably the strongest OPC ever. Never bent a 3 piece chromo crank. the arms will crack before you twist the axle.
You can have your opinion, but 1 piece cranks are not anywhere near as strong as what I linked to.
On top of that, you have no clue as to what 320 pounds does to a pair of cranks as evidenced by that spot of ignorance.

SkinGriz

I know they aren’t as strong. But I think some are strong enough, even for a 300# rider.

If he was going to come up short trying to jump a triple, I’d definitely say don’t do it. Not me, but I did see a OPC shatter when another rider at a BMX track landed short.

Schweinhund

I bent every single crank either cranking up a hill or doing a jackrabbit start from a stop light. None were from jumping and always the left side

Cabo9302

I've never tried my hand at removing/changing out a crank. Kind of intimidated, actually. I think I've decided to try the set up as-is and see how it works out. Thanks again for the replies & suggestions.

Cabo9302

Ok, dumb question time, but is it necessary to replace the entire hub in order to go with a QR? Can I just replace the center shaft? I'm too scared at the thought of replacing the hub and trusting myself to adjust the spokes true...

SkinGriz

Cabo9302

Good stuff. Thanks!

Schweinhund

I never said one piece cranks were weak, what I did say was that chromoly 3 piece cranks are stronger.
one piece cranks are not going to hold up to the OP.

SkinGriz

I am probably way off. I’ve never had either the weight or strength to worry about it from just riding around, bunny hopping up or off curbs, etc.

DesmoDog

Hold on there, tiger... I'm the OP. One piece cranks work just fine for me. I've never bent one and would be shocked if I ever did.

The guy you're calling the OP is a newb who highjacked this thread.