How to fit motorcycle spokes to a sun ringle mtx rim
- Thread starter Dlogic
- Start date
bowlofsalad
100 kW
Very interesting, thanks for sharing. I don't want to pretend to be an expert on wheel building. Maybe you wanted super thick spokes because of the torsion and radial lacing, most people seem to think thinner gauge spokes are the way to go, but I don't understand all of the dynamics at play. I like your idea for modifying the rim though, very clever, I wonder if there is a better way of drilling the rim, I wonder if you could double the spoke count, that'd be a great route to go.
Do yourself a favor, wear a respirator with p100 filters (3m 7500 series is great) when doing things like drilling and do this in a space like a garage, preferably with good ventilation. If you ask me, this suggestion isn't optional. You may have been wearing a respirator, I couldn't see but it is a good suggestion no less.
For me, efficiency and reliability is what ebiking is all about. This is a contrast to internal combustion engine bikes, which can achieve similar speeds, but can't touch ebikes in efficiency and reliability.
Do yourself a favor, wear a respirator with p100 filters (3m 7500 series is great) when doing things like drilling and do this in a space like a garage, preferably with good ventilation. If you ask me, this suggestion isn't optional. You may have been wearing a respirator, I couldn't see but it is a good suggestion no less.
For me, efficiency and reliability is what ebiking is all about. This is a contrast to internal combustion engine bikes, which can achieve similar speeds, but can't touch ebikes in efficiency and reliability.
docnjoj
1 GW
Um..... BOS. The guy you just gave advice to (dlogic) is a world class engineer. I suspect he may know some safety rules and uses. I realize that reminders can be useful, but this kinda comes across as patronizing. Just my 2 kroner on the subject. Definitely check out some of his previous posts on gearbox building for Stealth Bomber rebuilds.
otherDoc
otherDoc
bowlofsalad said:
That's definitely not a radially-laced wheel.
Chalo
100 TW
docnjoj said:
I've seen highly qualified engineers do boneheaded things lots of times. Putting huge M/C spokes into a bicycle rim designed for around 100kgf of per-spoke tension seems pretty boneheaded to me, with much more downside and much less benefit than using normal bicycle spokes with washers on the hub holes.
hjns
100 kW
Dlogic said:
Thanks for sharing, very posh!
I like it, even though I will probably not do this myself, and I like even better that you have made a movie to show how it is done!
999zip999
100 TW
Great vid. But I think you may have lost it in the end when you hit WOT. This has me a little worried as how you will be using this motor. You still have 250 watt law with the 5304 ? Would like to know how this holds up. But this will take time and testing. Have fun.
To this very day this wheel has done around 17000 Km. Of course you could just destroy the rim if the spokes are tensioned to much. That´s not the plan here. All spokes have been tensioned using a custom built torque wrench to prevent any over tightening.
Torque is around 3 - 4 Nm per spoke. An elastic conical washer sits under every spokes nippel preventing them from becoming loose.
Your right though, there´s no need for such big spokes. I did like the brutal look when compared to the standard bike stuff.
Another thing where the many spokes the just broke when feeding the X5 bursts of 17 Kw.
Torque is around 3 - 4 Nm per spoke. An elastic conical washer sits under every spokes nippel preventing them from becoming loose.
Your right though, there´s no need for such big spokes. I did like the brutal look when compared to the standard bike stuff.
Another thing where the many spokes the just broke when feeding the X5 bursts of 17 Kw.
Chalo
100 TW
Dlogic said:
That's an ingenious key detail. You are using Belleville springs to provide the elasticity that is missing from the spokes themselves. It's a good solution to the problem, but the system wouldn't work so well without them.
So I guess I should amend my earlier comments to say, don't use thick spokes unless you also use Belleville washers to provide tension preload.
Spacey
100 kW
I'm going to go with the happy Dlogic guys advice, just in time for my 24 inch rim Crown motor rebuild....cheers dude.
hjns
100 kW
Dlogic said:
I am curious now. What conical washer did you use, how did you position them, and at what tension do they flatten out? With these thick spokes, a torque of 3 - 4 Nm per spoke could easily flatten a conical washer, meaning that there really is not a lot of "springiness" left.
hjns
100 kW
Thanks. In that case, I assume that the main function of the conical washers is to allow for better positioning of the nipples, and not so much to add "springiness", right?
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