#41 or the 415 chain.... which one is best?

Discussion in 'General Questions' started by Carl Walichnowski, Aug 18, 2016.

  1. Ok I'm almost gathering all of my parts for my 1st build & I'd love some info on which chain I should go with. I have the 2015 Grubee Gt5A SkyHawk that came with the 415 chain & I recently received the 40 tooth sprocket that came with my hub adapter. I've read a lot of info on here about the differences between the 2 chains but not to much of an answer as to which to go with. So help a Noob out, which chain would the pros go with if both chains are already available? Thanks!!

  2. butre

    butre Well-Known Member

    415 works great, 41 is just more readily available at tractor supply and the like
  3. Well I have both chains so I'm wondering what to go with.
  4. KCvale

    KCvale Motorized Bicycle Vendor

    I find 41 a totally useless overkill chain size.
    If your back sprocket is is mounted right you'll much happier with the smaller 410.
  5. gary55

    gary55 Well-Known Member

    415 rated 1600 lbs. #41 2000 lbs. The # 41 won't stretch as much, but it is about 1/32 " wider and causes clearance issues in the clutch arm housing of some engines. I find 415 suits my needs well, and that's what I would go with.
  6. FurryOnTheInside

    FurryOnTheInside Well-Known Member

    Grubee GT5A manual states that the drive sprocket is the right size for 410 (bmx) chain and will accept 415. A Grubee brand wider sprocket that will only accept a 415 chain is available on eBay. Manic Mechanic website states that their sprockets will accept 410 and 415 and #41. Except for the 48T, which only accepts 415 and #41.
    Ultimate tensile strength (in the DID brand) is no different between the 410 and 415 chains, except for their track chain which is a bit stronger and it's a 410.

    Personally and IMO,
    I believe KCvale is correct and strength is NOT an issue on a correctly fitted chain. Using 415 chain on 410 sprockets might be able to "forgive" some mis-alignment but you can always align the sprockets properly and use 410.
    Longevity might be an issue.
    Many choices of 410 bicycle chain exist to suit all pockets and it is possible to get good deals on that auction site.
    I like the nickel plated KMC chains (still need cleaning) and I will be putting the best KMC chains that I can afford onto my build to try to get some good lifetime out of the chain on my salty, sandy bike paths... when it happens. I'm slow at saving up lol.
    Last edited: Aug 18, 2016
  7. gary55

    gary55 Well-Known Member

    I think a picture is worth, well you know. So I went and grabbed a hand-full of new sprockets from various suppliers off of my stack, and popped the cover off a new grubee gt5a "which I will be returning to motorized bikes usa". I'll share that with the forum later. Note only the two top sprockets are narrow enough to accept a 410. Most of the suppliers sprockets will not, and while the sprocket for the rear wheel supplied in the grubee kit will accept 410 the sprocket on the engine will not. It is to thick. Check the gear on the engine Carl before you go buying chain. I would love to be able to use bmx 410 and I do on the secondary chains of the jack shaft, but it's not gona work for you on the engine sprocket. Sorry about the repeat pics.. I'm kinda computer stupid so I can't figure out how to get them off.
    [​IMG] [​IMG]

    Last edited: Aug 18, 2016
  8. FurryOnTheInside

    FurryOnTheInside Well-Known Member

    There is a replacement sprocket of each ie both sizes available, and it is listed as being the Grubee brand. It's pretty cheap on eBay. I have the item No if you want me to get it, or you can search for a "bicycle engine narrow (or wide) sprocket" you can now get whichever you need to suit the rear sprocket or your chain preference. :) I only found it recently and I will have to get the narrow one as my cheap generic engine came with the wide 415 one.

    Oops the sprockets I found are from a UK supplier, and of course I can't confirm that they are actually from Grubee, just going by what they said. Anyway:
    Narrow Grubee sprocket UK eBay item no 112075188495
    Wide Grubee sprocket UK eBay item no 112075190506
    Last edited: Aug 19, 2016
  9. KCvale

    KCvale Motorized Bicycle Vendor

    I like KMC HD 410 chain myself, I use it in my shifter builds, and older Skyhawk builds as they were 410 based, and some of my shifter builds it's just 7-speed chain and they hold up pretty well, but I still prefer an internal shifting hub and #410.

    I liken using #41 chain on an MB to using large ship anchor chain for your row boat anchor chain.
    If you are breaking #415 chain it is not because of the chain, the same for needing to use a spring based tensioner, your rear sprocket is not true.
  10. Well I have yet to break any chains, I was basically asking because I have both the 415 & the 41 chain and I'm starting my first install this weekend. I hoped to gather some info on what chain I should go with. I've heard mixed opinions on both chains so I was still undecided.
  11. Thanks for the input & the pics Gary. I have the sproket/hub adapter for the rear sproket so with that would you still go with the 415 chain? Even though the 41 chain may be the more expensive chain & I happen to just have 10 foot of it laying around I was unsure if it'd be practical to use, would it be overkill due to its thickness, especially considering I'm only riding a couple of miles a day on level streets?? So with the Grubee GT5A SkyHawk the engine sprocket will only fit the 415 adequately? You mentioned the engine sprocket is to wide for a 410 but that sproket is okay to fit the 41 right? After reading all this feedback & from what I've read elsewhere I'll probably go with the stock 415 chain that came with the kit, at least initially anyway.
    marshall johnson likes this.
  12. KCvale

    KCvale Motorized Bicycle Vendor

    Yep, just keep the #41 around for a spare.
  13. Tony01

    Tony01 Member

    Stick with whatever chain fits your sprockets best. wider chain doesn't always mean better. I just went to 420 chain from 41. It's the same width but 420 has much thicker side plates and thicker pins and rollers like 40 chain. Look at the plate thicknesses, roller and pin diameters and use the chain with the bigger numbers. now with that said I think the big thing is to just stick with motorcycle chain, basically 3 digit number chains instead of industrial chain which is all two digits. I personally have had a lot of problems with 41 chain but I do have a lot more power and I put at least 100mi on my bike every week. Last week I put probably 300mi at least and the 41 chains stretched and sheared, went to the 420 have around 200 maybe 300mi on em and no issues at all.
  14. Steve Best

    Steve Best Well-Known Member

    I can easily agree with Gary, KC Vale and Tony. Get the chain that fits the width of your sprocket.
    All is plenty strong so lighter is better.

    Extra width does not mean extra strength and an aligned, clean, properly lubed bicycle chain (410) will last the life of the bike.
    Too wide a chain on a sprocket is not good too, but the difference between 410, 41, and 415 is very small.
    I like the analogy of ship anchor on a dingy. Bigger is not needed here.
    I use 410 "BMX", also called single speed bicycle chain. (check it fits your sprockets for width)
    I like the $10-$15 price tag and ready availability at any bike shop.
    "Giant" brand has been good to me.

    An early no-name black 66cc motor I have has a wide motor sprocket andwill not take 410 chain.
    All my back sprockets will fit 410 chain, as will the Sick Bike Parts shifter.

  15. fattire jack

    fattire jack Guest

    I prefer the #41 chain, might be a little overkill. Have over 2k miles on my current chain. #415 only lasted around 500 miles. I am pushing fat tires which puts more stress on the chain.
  16. FurryOnTheInside

    FurryOnTheInside Well-Known Member

    I can confirm that the 10t sprockets on eBay UK, listed as Grubee / Skyhawk narrow sprocket is a good fit for 410 1/8" BMX/track chain. Measured at .120" (up to .125" but it still has burrs on it). Hopefully those are available direct from Grubee or their dealers in USA.
  17. BakkenRide

    BakkenRide New Member

    i use 41, and like it, still using same chain after 2 years and many miles, in all kinds of weather , daily driver eastern Montana (i ride all year)
  18. gary55

    gary55 Well-Known Member

    Hats off to ya Bakken. Riding in snow makes me edgy as hell, and we don't see nothing compared to up there.
  19. Nate888

    Nate888 Member

    My kit came w/ a 415 chain & it seems good. in my limited experience, I'd recommend the 415, though chainbreakers for 415 are impossible to find at brick & mortar stores, IME. (A friend broke my chain w/ a hammer, small sockets & a little hardened steel bolt while I carefully held it in position. results were good, but he's done it lots of times before)
    marshall johnson likes this.
  20. Can you use a 41 chain breaker on a 415 chain?