| Author | Message | ||
     17blast |
I'm hoping to get pictures of all the big wheel Blast in one spot. | ||
| 17blast |
I'll start.     | ||
| 17blast |
    | ||
| 17blast |
    | ||
| Jprovo |
Looking good with the clipons and V-rod headlight... | ||
| 17blast |
The front brakes are finished. Needs a little paint for the fender though. I'll get to that when its running and all the bugs are out.   I used a radial master cylinder from an 04 YZF R1. | ||
| 17blast |
I have the new front sprocket on. I'm still waiting for my chain tensioners to be finished. Once I have those, I can make the wheel spacers and start on the rear brakes.   The front sprocket is an 18t from Renthal and the back is an 57t from Vortec. This will give me the same final drive ratio as stock with the 180/55 ZR 17 tire. | ||
| Ezblast |
You are doing a great job! Have you got that shock situation worked out yet? GT - JBOTDS! EZ  | ||
| 17blast |
The front is complete now with the ignition switch and the spedo mount.    | ||
| Buelldyno_guy |
17, word of caution I had 17's on my 600 and will keep them on my 650, but I am using an smaller Avon 150. The reason is that you will need to spin the rear tire a little. If it hooks up too well there is a lot of load on the modified swing arm. I have heard of a few that actually deformed due to the torque load. Just what I have heard and the 600 has only ran at Bonneville where there was no load. ... Terry PS Great Job the bike looks sharp. ... TP (Message edited by buelldyno_guy on February 21, 2006) | ||
| 17blast |
I’m not too worried about engine torque now but am concerned about brake torque. I have plans to install a swingarm brace so this won’t be a problem. I also have been looking into modifying a FZ1 or FZ6 swingarm to help reduce unsprung weight. There also designed to handle 100+ H.P.. | ||
| 17blast |
The new Progressive shock has arrived. Even though it is larger in size it's noticeably lighter.   The added ride height in the rear is a good mach for the Yamaha YZF R1 forks. | ||
| 17blast |
But it's not perfect, it’s like a chain reaction, I change one thing and many other things must be changed also.   With the swingarm straight the chain is tight. But when it’s down there is way too much slack. This were I plan to put an idler pulley. | ||
| 17blast |
Things left to do: rear brakes, lengthen kick stand, front turn signals, mirrors and idler pulley.   | ||
| Ezblast |
Hows the handling - is my final question. Looks great! GT - JBOTDS! EZ | ||
| Naustin |
17 - Looks great! Here's Ralphs latest ride report with the stock 919 unit.... Today was a day of riding and shock tuning for me. The weather was pretty nice, so off I went...and test rode some rough roads with my honda 919 shock. And ya know what- it hurts ! Also, the fact the rear end is really raised too high, which also compresses the front forks more than it did before- in normal riding...and they really dive when braking hard, plus the drive belt is a bit too lose. So these are my Major complaints about the 919 shock conversion....but there is a happy ending to this story. I mentioned before, I still had a few tricks up my sleeve, but I wanted a thorough test under all conditions before I attempted to make further mods. But after my ride today, something needed to be done ASAP ! And here is what I did.... I needed to remove the shock again for this mod, which isn't that hard to do- although the external reservior does make shock removal and installation just a bit more troublesome than the normal shock. After the shock was removed, what I wanted to do was remove even MORE preload from the spring ! But the preload collar is already set on the lowest of seven notches....but my thought was- why not try and machine out that lowest notch even FURTHER ! Which is EXACTLY what I did ! I didn't know exactly what the end result would be like... but I just Had to do it. So I machined out (on my Drill press)the notch about another 1/4" Deeper...about as deep as I thought was safe...but I did think- this was a oneway road...as once the preload was dropped into this really deep notch- it Wouldn't come back out very easily- if at all ! Well, I did it- and rotated the preload/cam collar- and THUNK it went- into the deep crevice. Now let me mention- that this NEW setting is just about "ZERO" spring preload now...I say that because, with a firm grip- I can can now rotate the spring around the shock... So that pretty much says Zero preload to me ! Now time to re-install the shock...which I'm getting pretty good at by now  I first measure the static ride height, which is still high, but maybe it sagged about 1/4". I figured as much, so that came as no surprise. Now I hop on the bike with my fat arse, and again take a new measurement of the "Laden" ride height. WOW!...it dropped another 3/4" from the previously measured "Laden" ride height ! Excellant ! That is Exactly what I was hoping for. The reduction in "Laden" ride height also brought the swingarm back to less of an angle, and in doing so- tightened up about 50% of the excess belt slack that I have been sooo worried about... it's still a tad loose btw. Anyway...I can't wait any longer...I quickly re-apply my riding gear and push the bike out of my basement shop- into the garage and out the door. I fire her up- let it warm about 2 minutes, drop it into gear...and off I go :-) I immediately feel the one inch reduction of rear suspension ride height, it no longer feels "Jacked" up... but it still is raised about 1-1/2" over stock rear ride height. I ride for 30 miles, I really put my Blast through it's paces, hard bumps= much nicer, hard braking= much less front end dive, I look at the drive belt while riding = alot less flapping- Excellant ! I ride home, and put the Blast back to bed.... It is now almost Perfect ! (at least for me)...but I still DO NOT Recommend the swap of a Honda 919 shock to a Blast.... unless you know what you're in for... you need to be a heavyweight dude, and you need to make aLL the modifications to the shock as I did...and even then- riding with increased rear ride height does affect the bike- not exactly in a negative way- but it does change the handling of the bike...which I'm already used to. After this last mod and test ride, I'd say my Blast now rides almost exactly like a Buell XB9/12S Lightning. It's higher feeling than a standard Blast(don't forget my taller front tire too), and it snaps into turns faster because of the height...but it's completely stable at speed...and the rear suspension is a bit more firm than the stock Blast. All in all, it's exactly the way I wanted it to turn out..... I'm now VERY happy with the end Result :-) ~Ralph | ||
| Bill00 |
17blast, Is that a 520 chain you're using? How did you calculate what size sprockets to use to get stock gearing? | ||
| 17blast |
Yes it is a 520 chain. I’m not sure if I can explain it correctly for you but I will try. Figure your drive ratio by dividing your rear sprocket by your front. Then take that and multiply it by the circumference on the rear tire. This will give you inches of travel per revolution of the output shaft. I purchased the smallest front sprocket available and already had the 180/55ZR17 tire. With those numbers in hand I calculated what the rear sprocket needed to be and ordered it. It was a special order from Vortec and took 2 months. | ||
| Bill00 |
Thanks. Just trying to figure out how to gear this:  | ||
| Jprovo |
17- I'm working on drawing some stuff up to Do 17" whell conversions for the Blast racers at WSMC. Do you have any drawings of the axle mounts that you machined that you be willing to share? Any more details of the Axle adjusters? | ||
| Jprovo |
Bill00, I assume that you want to keep the same gearing as the stocker. Assuming that you are going to use a 23 tooth sprocket from American Sport Bike, and that the rear tire has a diameter close to 26", you want a 73-75 Tooth rear sprocket. Which is huge, and maybe tough to find. If you go to Renthal, they make a 16 Tooth front which will get you in the more reasonable range of 50-52 Teeth on the rear. (Message edited by jprovo on March 08, 2006) | ||
| 17blast |
JPROVO I will scan what I have and e-mail it to you. | ||
| Ezblast |
Me also - please! GT - JBOTDS! EZ | ||
| Jprovo |
17 Blast, Thank you, I appreciate it. | ||
| 17blast |
    | ||
| Saltyblaster |
Very cool 17Blast. Well done & and thought out. How's the handling with the new suspension in place? | ||
| Naustin |
Looks awesome! | ||
| 17blast |
Sunny day, 47 degrees, had to go for a ride. Every thing went well. The suspension feels nice. I'll do more riding when I get another good day.   | ||
| Ezblast |
Where did you relocate your rear brake fluids resovour? Your bike looks very trick! GT - JBOTDS! EZ | ||
| Ezblast |
You know a rub block, cut the swing arm tabs, paint job - either fender or body, and a chain oiler and your good to go! What do you figure your wheel base, rake and trail to be? Great job! GT - JBOTDS! EZ |
