| Author | Message | ||
     Terpfords |
i would like to extend my swing arm on my 2001 M2. The stock swing arm is cast so I’ve been reading about the possibility of using a S1/S3t or 97-98 M2 to extend. Are any of them aluminum square tubing ? | ||
| 89rs1200 |
The 1998 and earlier are steel square tubing. The mounting block is also different. | ||
| Jolly |
Are you trying to set your bike up for drag racing on the track? | ||
| Kmbuell |
I have several steel swing arms and mounting blocks if you are interested. PM me, or kmeath34@gmail.com Kevin | ||
| S1owner |
Mounting blocks are not always different! 96 block with a X1 swingarm. Fit just fine.  Bigger concern would be why? You are going to have shock issues snd belt issues | ||
| 89rs1200 |
I was answering his direct question concerning a 2001 M2. Good to know your 1996 X1 will mount a cast swingarm. | ||
| Upthemaiden |
"Are any of them aluminum square tubing ?" None of them have aluminum square tubing. I have seen an extended aluminum swingarm or two, but just the regular case version with an extension welded in. The steel swingarm would definitely be the way to go. You could avoid the belt issues by switching to a chain drive, but you'll still have to figure something out for the suspension since the longer swingarm will have more leverage and will make the shock feel soft. I feel like you'd have to pay for one of the nicer shocks and get them built with a heavier spring.  | ||
| No_sprk |
if you want to drag race it i have seen a few drag bikes for sale in WI/MI area craigslist | ||
| S1owner |
And I have had almost all of the blocks in my shop only issue I ever had was the travel stop needed filed to get full travel. 5 min job | ||
| 89rs1200 |
This is a VERY important piece of information which must be stated; "travel stop needed filed to get full travel". | ||
| Upthemaiden |
Children children...  The two different mounting blocks are very similar, there's just one spot that needs filed slightly to go from steel to aluminum. I posted this picture a while back showing the difference. In his case, he's starting with the aluminum swingarm so his mounting block will already have the cut-out to work with either style swingarm, so nothing will need filed.  | ||
| No_sprk |
good info! i want to convert to a late swingarm and rather not have to buy more stuff | ||
| Upthemaiden |
I just did mine this winter. Some people say it feels stiffer. I didn't notice any difference in how my bike feels(although it was 7 months between riding on the two different ones). It sure did make a difference in the appearance though. I thought that steel swingarm stuck out like a sore thumb. | ||
| S1owner |
Its all good. | ||
| No_sprk |
How much do you weigh? They say it's Alot stiffer. I'm assuming with a heavy person the swingarm can flex because of the offset shock mount. | ||
| 89rs1200 |
Thank you Upthemaiden for the info. and photos. I knew there was an issue moving from the steel to the aluminum. Good to know the reverse is not a problem. (Message edited by 89rs1200 on July 06, 2018) | ||
| S1owner |
Stell has a natural flex to it. Aluminum is stiffer. As an example My sons race bikes they run aluminum or carbon fiber tubing frames because they get more power to the ground with minimal flex compared to the thin wall chromoly it is the same weight but flexes under load. Now the downfall is aluminum bike frames fatigue over time and abuse as where the flex of the chromoly protects the steel frame. | ||
| Upthemaiden |
No_sprk, I'm about 165lbs. I've never been one to notice random things though. People can go on and on about which tires they like and what air pressure they need and their suspension being 2 clicks off in one direction... I just get on and ride the thing. I'm sure if I had two of the same bike with different swingarms and rode them back and forth a few times I might be able to pick out the difference, but as a commuter who rides on normal roads at normal speeds, I can admit that my upgrade was 100% cosmetic. I did weigh them when I had them off the bike and the swingarms were almost identical in weight. | ||
| No_sprk |
Add a hundred pounds and that's where Im at. I thought Buell themselves said it was over twice as stiff? | ||
| Terpfords |
So this a direct replacement ? Are the axles the same ? | ||
| S1owner |
You will need the axle, spacer, tensioners and swingarm | ||
| Terpfords |
I weight 180 and I would like to occasionally ride with my wife. I have a Penske with a 450# & 600# spring. | ||
| Lynrd |
Well, if you lengthen the swingarm you just changed the shock geometry math significantly. I’ve only seen extended swingarms run on Buells with a solid strut replacing the shock (Dragsters). I have one hanging on the shop wall (steel, extended 4”) . I might list it in classifieds if someone wants it as the project it was intended for went in a different direction. | ||
| Hybridmomentspass |
lynrd - PM me with a price, I MIGHT be interested in that | ||
| Madmacks |
Drag racing is fun!!! You can build whatever works. This works pretty good, I'm still working on the set-up. I'll post some better pictures when it's off the trailer. 12 inch extension, adjustable ride height, Showa shock from a Ducati Monster, racetech gold valve and 10.7kg spring.    | ||
| Terpfords |
Let me know what you think of a 12” extension. I am looking at a 6” extension. | ||
| Madmacks |
12 inch is probably too much for the street. I use this bike only on the track. It is also lowered quite a bit so it drags the pipe turning left at the end of the track. I have no input on a six inch extension as I have not run one. This bike will still wheelie off the line if the tire hooks and I give it too much clutch too quickly. A six inch will definitely give you more launch control but I have no idea how the street handling will be affected. You will very likely need to upgrade the spring as I don't think you can add enough pre-load to compensate for the extra leverage. I'm certainly no expert on this. I did get help and advice from the suspension shop that did the shock/spring for me. RaceTech can help you out I'm sure. Have Fun!! | ||
| Gusm2 |
https://drive.google.com/file/d/1_5HE8_JhpaFLj-hUv CrmYvUU8V_LC27g/view?usp=drivesdk I use a strut on mine as it's never on the road anymore, a lot cheaper and simpler option, arm is 6+ also | ||
| Terpfords |
What kind of power are you guys making ? And what kind of et’s ?  | ||
| Gusm2 |
94.8 rwhp 11.18@117.95 so far |
