Pit Stand Spools for 919 - Wrist Twisters
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post #1 of 21 Old 04-24-2018, 12:41 PM Thread Starter
Tirone
 
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Pit Stand Spools for 919

Has anyone drilled and tapped mounting holes in the rear swing arm of the 919 to accept lifting spools for a pit stand? Right now, I lift the rear of the bike on a pit stand using the rubber covered pegs that are an accessory for the stand. However, if I do much work on the bike while it's on the stand, I notice it slowly sliding down the pegs which is not good. My other bikes have spools on the rear swing arm and I'd like to add them to the 919 but I really don't want to start some sort of crack in the aluminum from the holes.

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post #2 of 21 Old 04-24-2018, 10:20 PM
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It's been done. Not really recommended. Better to use a stand that uses the chassis such as a Phobeman stand.

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post #3 of 21 Old 04-25-2018, 11:46 AM
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I'm surprised someone hasn't made something like this for the 9er.

Honda Grom Chain Adjusters




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post #4 of 21 Old 04-25-2018, 12:27 PM
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T-Rex racing makes these adapters. I don’t know anything about them.

https://t-rex-racing.com/catalog.php?item=723

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post #5 of 21 Old 04-25-2018, 12:29 PM
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Ohh wow that's actually really cool...


Though I doubt it'd be simple to do cause of the shape of the swing arm ends...

Quote:
Originally Posted by crakerjac View Post
I'm surprised someone hasn't made something like this for the 9er.

Honda Grom Chain Adjusters


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post #6 of 21 Old 04-26-2018, 08:22 PM
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I just did it. If I could undo it, I would. There is not much aluminum at all for threads. They do work so far, but any small bump against them and there's going to be a hole where the spool was.

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post #7 of 21 Old 04-27-2018, 06:13 AM Thread Starter
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Thanks for the inputs. I'm not going to drill the swing arm but will make a couple of yokes with spools attached to them which can slip up under the swing arm for lifting. I was afraid the arm might be rather thin but I wouldn't know that until I drilled the holes. Glad somebody already checked that out!

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post #8 of 21 Old 04-27-2018, 08:12 AM
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Quote:
Originally Posted by crakerjac View Post
I'm surprised someone hasn't made something like this for the 9er.

Honda Grom Chain Adjusters

I'm working on something similar for FZ-07's as they're starting to get used more heavily for racing and have no way to mount spools. I'll look into what it would take to adapt the design for the 919, but I was of the thought that the market wasn't really there.

Love is the feeling you get when you like something as much as your motorcycle - Hunter S. Thompson
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-2009 Suzuki GSX-R 750 Race Bike
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post #9 of 21 Old 04-29-2018, 10:32 AM
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I have a couple of suggestions.

Why not drill and tap the axle bolt? Lots of steel there, and if you screw it up, good reason to get a hollow axle from an f4.

If the rubber coated Pit Bull stands slide down, why not come up from the bottom of the swing arm, and drill and tap it for a "Stop Screw"?

On the 599, I put the Pit Bull behind the rear axle, and it doesn't go anywhere.

KTMs come with Spool screw bungs, ready to go. Even the little 390 had em!
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post #10 of 21 Old 04-29-2018, 01:25 PM Thread Starter
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Here's my solution: Probably structural overkill but it's the material I had in the shop. White Delrin pads have buttons on them which snap into holes in the bracket. They pad the assembly so it won't gouge the trailing arm while it's being lifted. Stud is welded in from the back side and then finished off smooth. The pads are just think enough to hold the brackets on the trailing arm while the pit stand is positioned. The spools are black Delrin.

Of course, fancy paint will be required but I wanted to see if it would work before painting. It does work very well. The bike not likely to slide out of the brackets.
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post #11 of 21 Old 04-29-2018, 01:47 PM
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I had aluminum blocks made up for weldment to the bottom of the axle slot tangs, said blacks predrilled and tapped before the welding, to accept the bolted on spools.
Very unobtrusive to the eye, well beyond required minimum design strength, and work like a charm.
I have a pdf format drawing available for the blocks if anyone wants to check it out in detail, or perhaps do the same.
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post #12 of 21 Old 04-30-2018, 11:20 AM
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post #13 of 21 Old 04-30-2018, 03:25 PM
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Maybe get a group thing going :P ?




Quote:
Originally Posted by mcromo44 View Post
I had aluminum blocks made up for weldment to the bottom of the axle slot tangs, said blacks predrilled and tapped before the welding, to accept the bolted on spools.
Very unobtrusive to the eye, well beyond required minimum design strength, and work like a charm.
I have a pdf format drawing available for the blocks if anyone wants to check it out in detail, or perhaps do the same.

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post #14 of 21 Old 04-30-2018, 03:30 PM
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Quote:
Originally Posted by garyb900 View Post
T-Rex racing makes these adapters. I donít know anything about them.

https://t-rex-racing.com/catalog.php?item=723
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post #15 of 21 Old 05-05-2018, 08:05 PM
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I did it, it's working just fine.

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post #16 of 21 Old 05-17-2018, 10:06 PM
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Took my harbor freight rear stand and adjusted the lifts so each one fits snugly on the inside of each swing arm L&R. Covered each shaft with fuel hose. Safe and simple. By putting both on the inside of the arm it has no place to go side to side.
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post #17 of 21 Old 05-17-2018, 11:36 PM
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Very interesting approach... might try to see if I can do this on mine too.




Quote:
Originally Posted by notabiker View Post
Took my harbor freight rear stand and adjusted the lifts so each one fits snugly on the inside of each swing arm L&R. Covered each shaft with fuel hose. Safe and simple. By putting both on the inside of the arm it has no place to go side to side.

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post #18 of 21 Old 05-18-2018, 09:29 AM
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Also those exhausts look awesome. PM me if you ever want to sell :P

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I did it, it's working just fine.

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post #19 of 21 Old 05-18-2018, 08:05 PM
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I just purchased the Venom rear paddle stand and front triple tree stand for my 919. They work great.
My previous stand for my previous bikes was the spool type, so it took a few tries to get used to the paddle style on the rear of the 919. But the front triple tree is very cool and very stable for lifting the font of the bike.

https://www.kapscomoto.com/ca/garage...s/l/venom.html

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post #20 of 21 Old 06-26-2018, 09:59 AM
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I just milled aluminum and drill/tapped the bolt vertically into the bottom of the swing arm with the spools coming out of the block instead of the swingarm. Has worked well

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post #21 of 21 Old 06-27-2018, 03:54 PM
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I've been using paddles on my rear stand, and I put a couple pieces of anti-skid tape (used on stair steps) on the underside of the swing arm to give it a little more to hold onto. It hasn't let me down yet.

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