gunnar
Full Member
fabbin stuff...
Posts: 235
Likes: 144
Registered: Aug 14, 2019 9:54:53 GMT -7
|
Post by gunnar on Sept 6, 2019 16:36:46 GMT -7
Can you guess what it is? 1/2" thick Delrin More tomorrow
|
|
Sponsored Ad
|
travist67
New Member
"I don't reckon I got no reason to kill nobody."
Posts: 36
Likes: 20
Registered: Jul 13, 2019 9:32:20 GMT -7
|
Post by travist67 on Sept 7, 2019 3:22:43 GMT -7
Kickstand puck?
|
|
gunnar
Full Member
fabbin stuff...
Posts: 235
Likes: 144
Registered: Aug 14, 2019 9:54:53 GMT -7
|
Post by gunnar on Sept 7, 2019 4:18:20 GMT -7
We have a winner! Very good brain sir. I'll get all techy with it later, but the basic reason is to reduce stress on the stand and frame area. I made one for the MV too, but in that case, the kickstand has a bit of a curve to it, so the forces on it were slightly greater. The MT stand is straight, so not as much force, but I still prefer the bike to stand a bit straighter when parked. MV Agusta F4 result: EDIT: Well sorry guys, there will be a bit of a delay...If you look at the bottom of the kickstand, you will notice 3 different angles, which I want to match on the plastic to fit properly. Matching the angles isn't the problem, it's getting my mini-mill out of storage and setting it up in my G/F's garage (which is full of crap at the moment) which is a problem. We will both work on making some room today and tomorrow, hopefully I can make some progress tomorrow night. Sorry about this
|
|
vstate60
Full Member
Posts: 218
Likes: 63
Registered: Jul 20, 2019 14:37:58 GMT -7
|
Post by vstate60 on Sept 7, 2019 15:54:15 GMT -7
I’ll take one when you’re done! Let me know
|
|
gunnar
Full Member
fabbin stuff...
Posts: 235
Likes: 144
Registered: Aug 14, 2019 9:54:53 GMT -7
|
Post by gunnar on Sept 8, 2019 12:08:29 GMT -7
A little progress, but still quite a lot to do...probably need to change the title LOL. 3 different angle cuts, plus the ground angle too. Attached: Just one of the angles that needs to be machined into it, I'll have to make this a prototype and get some 3/4" to 1" material for the final part, the kickstand will need to sit about 1/4" down into the puck, and anything less than a 1/2" lift won't cut it. EDIT: ordered 1" thick, will be here on Tues. Probably hard to tell the difference in these pics, but if you were next to the bike you would see it much easier. Easy to see all the junk that needs to get out of there so I can set up shop, friggin hoarder girlfriend
|
|
gunnar
Full Member
fabbin stuff...
Posts: 235
Likes: 144
Registered: Aug 14, 2019 9:54:53 GMT -7
|
Post by gunnar on Sept 9, 2019 12:18:10 GMT -7
Got the title changed OK, finally got the mini mill in the backyard, and got this part roughed out...very rough. But it is getting closer at least: When the 1" material gets here, I'll take the kickstand off the bike,(which also needs some work to it) get everything matched up and hopefully done before the end of the week.
Damned near ready to just get a billet bar and make my own kickstand, Yamaha didn't do their best on this one. At least on the MV, they matched the bottom of the kickstand to the ground.
|
|
gunnar
Full Member
fabbin stuff...
Posts: 235
Likes: 144
Registered: Aug 14, 2019 9:54:53 GMT -7
|
Post by gunnar on Sept 13, 2019 14:09:25 GMT -7
Alright, lets try to get this thing finished up. So after checking if I had enough thickness on the kickstand foot, I decided to grind the bottom more parallel to the ground, and just make two angles instead of three. Looks like I took a lot off, but actually the material removed was a hair over 1/16" on the bottom. More material was removed on the backside smaller angle (still less than 1/8"), but this isn't as critical an area, plus it made things much easier for me. Then it was just a matter of matching the angles in the Delrin: Now all that's left is to drill the hole in the plastic, and shape it to look nice. Be back later with the finished project.
|
|
gunnar
Full Member
fabbin stuff...
Posts: 235
Likes: 144
Registered: Aug 14, 2019 9:54:53 GMT -7
|
Post by gunnar on Sept 13, 2019 15:36:10 GMT -7
OK, so this project is basically done. Kickstand and puck are joined, pretty tight fit, got lucky with the angle matching and hole placement. Plenty of chain room: Ground angle looks good: And another bad shot on the stand. Angle is about the same as last time, which I'm happy with: All in all, not too bad really, started out as a simple idea, got me a little scared in the middle, then it got easy again in the end. So right now it is 100 degrees outside (where I was finishing this thing up), I'm taking a break, tomorrow morning I'll get the bathroom scale out and try to show you the weight differences as far as ground pressures go, I'm actually curious myself, maybe 5-10 lbs or so, we'll see. So, of course when this puck is put on, I do have to be a bit more careful how I park, it's not a huge difference, but the bike could be unstable if parked on an uneven surface, but on flat pavement it's fine.
|
|
gunnar
Full Member
fabbin stuff...
Posts: 235
Likes: 144
Registered: Aug 14, 2019 9:54:53 GMT -7
|
Post by gunnar on Sept 13, 2019 15:46:31 GMT -7
I’ll take one when you’re done! Let me know The thing you gotta ask yourself....is do you trust me? Personally, I don't even trust myself! So unfortunately I just can't take the chance on ruining your kickstand. But, everything is laid out above, so if ya wanna take a shot at it yourself...
|
|
gunnar
Full Member
fabbin stuff...
Posts: 235
Likes: 144
Registered: Aug 14, 2019 9:54:53 GMT -7
|
Post by gunnar on Sept 14, 2019 11:05:58 GMT -7
Weight comparisons, I found four boards that matched the height of the scale (two under each tire) to simulate the bike on level ground. Carbon fiber scrap to prevent glass breakage. Kind of surprised at the numbers, I thought there would be less weight on the kickstand, and the difference would be small: No kickstand puck: With the puck: Now I'm definitely glad I did it. Have another project in the works, gathering materials together now, how about a copy of the Vagabond Motorsports fender eliminator in carbon fiber and delrin? I think I can make it a tiny bit smaller, and hopefully quite a bit lighter, we shall see.
|
|
aavmann
Junior Member
Posts: 93
Likes: 35
Registered: Mar 14, 2019 21:05:34 GMT -7
|
Post by aavmann on Sept 14, 2019 11:28:40 GMT -7
Over 50lbs reduced weight!!?? Bike is going to be even faster!! 😂
Not sure if you leave your bike in gear or not when parked but that material can be a little slippery if too smooth. It will scratch up a bit in time which will be better I think. Nice job!👍 (I’m a tool and die maker by trade so can appreciate the effort in this project as a whole). Check out my shot at a tail tidy in an older post as it involved some fun fab work too. Cheers
|
|
gunnar
Full Member
fabbin stuff...
Posts: 235
Likes: 144
Registered: Aug 14, 2019 9:54:53 GMT -7
|
Post by gunnar on Sept 14, 2019 11:34:48 GMT -7
Thanks, I'm a total self taught garage hack, the only thing I measured was the distance from the 4mm threaded hole in the kickstand to where the two angles meet, everything else was using my tiny brain. I'm very familiar with delrin, made the MV kickstand 3 years ago, and do leave the bike in gear parked, the bottom of the part has been grinded to match the ground angle.
I'll look for the thread-EDIT Saw it, very good.
|
|