Just finished the stationary break-in on my destroyer. Next stupid question, noticed that the Launch Box is set at 0/0. What setting should it be at for first couple of launches on the strip? Assuming somewhere around 4000-6000.

Start at 7500 and see how it launches, most of the launch is in the clutch set up though

Did 2 passes on my bike today. Fist pass was set at 5500 and bogged. Second pass was 6500 and was ok. Was set at 9000 from the previous set up :wazzup: Is this where it ends up???? Hmmmm :D

Bear in mind this was my second ever pass on the bike and only to half track. It did hit the wheelie bar ok second pass but went slightly off so I had to roll off and on again.

Did 2 passes on my bike today. Fist pass was set at 5500 and bogged. Second pass was 6500 and was ok. Was set at 9000 from the previous set up :wazzup: Is this where it ends up???? Hmmmm :D

Bear in mind this was my second ever pass on the bike and only to half track. It did hit the wheelie bar ok second pass but went slightly off so I had to roll off and on again.
Scotty:

Glad to hear you are riding the thing!!!! At Gainesville last year and this year we watched a lot of Destroyers staging and it seems that they have their launch boxes set at 9,500 or above. You can hear them hitting the rev limiter as the lights come down.

So I'm betting you will be moving the set point back up.

Pat and others will have more first hand experience.

Good luck racing!!!

Jerry

Thanks Jerry,
Actually it was set at 9900. My dealer service manager has told me to start at 6500 and learn to ride the thing first then slowly wind up the wick ;) A few lessons to learn on the way :D

Scotty:

Glad to hear you are riding the thing!!!! At Gainesville last year and this year we watched a lot of Destoryers staging and it seems that they have their launch boxes set at 9,500 or above. You can hear them hitting the rev limiter as the lights come down.

So I'm betting you will be moving the set point back up.

Pat and other will have more first hand experience.

Good luck racing!!!

Jerry

Keep us updatrd on your progress!

Scotty:

Have you played with your clutch pack yet??? The spring kit gives you several options to control slippage.

I think there are some historical posts on which combinations provided the best solution by the racing riders.

Regards

Hi Jerry,
No I havent played with anything yet and I didnt get a clutch spring kit :(

Going to tune it next week, waiting on the SERT CD-ROM to arrive... Got the map for it now which is cool, one less thing to worry about :D

I will post up when I get into it further :thumb:

NEW SERT CD--Please let me know what version you end up with. I understand from many of the Destroyer racers at Gainesville, FL this year that the newer version is much better than the earlier ones.

Clutch Pak- As you already know the clutch assembley is a MTC multi stage lockup.

MTC the Spring Kit from Part/Vendor number is P/N 36843-061 in case you want it. You'll need to order it directly from MTC 321-636-9480


Regards

Jerry

I really have not heard of many racing leaving at 9500 that I race against. My best advise is leave it at 7500 get used to it. Your weight, what you personally like and clutch set up will make the bike act different at each RPM on your launch. The first thing you need to do is mate your race tuner. Go in and move your rev limiter to 10,500. Set your tach to whatever you want and have fun. WARNING if your bike is not wanting to idle but run good at full throttle check your spark plug the electrode is gone. Change it. Next remember the plugs that are used are different than regular V-Rods. Have fun with your Destroyer.

Well last night I did my first 2 full passes for my ANDRA license.

Just so happened there was another new Destroyer there and they were running it for the first time. They had this really great guy Neal helping them. He is from Pasadena and has a bike shop there and races super gas and pro stock in AHDRA. He helped me get a few little things sorted out which was much appreciated :D

Had a string of bad luck during the day though and I was so glad that :stac: turned around for me. I was unfortunate enough to pick up a stone that pierced my slick after riding the bike from the trailer to the staging lanes. Had to push it over 1/4 mile with a flat rear :spank:

Then as if that wasnt enough, after making it finally to my trailer, I placed that stupid triangle stand on my bike (with the flat tyre) proceeded into my trailer and get changed out of my leathers. Well the bastard thing fell over :banghead:

I am so lucky that I hang my lid on the throttle and the bike is not even marked! I tell you guys I was "this close" to having the worst day in my life :bash:

Well after driving around 250k's round trip to go home, get my new slick and get back to the sponsors shop fit the tyre etc and driving back to the strip everything started to go well finally. Thank you Jesus! :D

As far as the bike goes, it is idling at 2000 pretty nicely. Sounds strong all the way. Hits the shift light in the speed trap and Im assuming that is normal at 130 ish mph. First pass went 10.3, second pass went 10.04 @ 128mph. Pretty happy with that as my first "full" pass :deal:

Going to try to tune it next week when the SERT CD arrives and look at the V&H Map for the Indy exhaust. Deiner says that is probably the best place to start as the table is probably a lot closer to begin with than what I have now.

Congrats.

Thanks mate :thumb:
Congrats.

If you have any questions on your Destroyer PM me and I will help. To start off with do re check your rear sprocket bolts. Mine after a few runs came loose. Take them out put BLUE locktight on them and torque to 24 pounds. Please do check. Also check your oil filter adapter they have been know to be loose too. If your bike does not want to shit it is your shift minder under the seat. They go out from time to time. I have only had one. It made you think that you blew the trans.

If you have any questions on your Destroyer PM me and I will help. To start off with do re check your rear sprocket bolts. Mine after a few runs came loose. Take them out put BLUE locktight on them and torque to 24 pounds. Please do check. Also check your oil filter adapter they have been know to be loose too. If your bike does not want to shit it is your shift minder under the seat. They go out from time to time. I have only had one. It made you think that you blew the trans.
Scotty may need some help with the clutch springs too. I checked with my guy over the weekend (he's about 125 lbs soaking wet) and he was finally happy with the silver clutch spring set. He also said what you did for his weight--he was happy after fiddling around for quite awhile with 7,000 rpm lauch box settings. and 7.5 lbs in the slick.

I think your point about all of the variables is very important to consider though. There is a perfect combination...but Unfortualtely it just isn't the same for everyone.

Regards

Thanks guys! Are there any heavy riders on destroyers? My 13 yo daughter weighs 125lb :hidesbeh:

Seriously, if there was a rider with around 190lbs maybe their setup would be close.. Dunno, but thanks for all the help and yes I will PM you if I get stuck.

Going to get the tune up done this week probably. Vance & Hines have 2 maps on the Indy pipe page for U4 & C25. Anyone run these maps?

We dont have U4 here and my alternatives are VP MS109 (unleaded), C16 or C25. Has anyone else ran these fuels?

U4 has lead I know but does the lead help anything or would the unleaded be ok? My tuner wants me to buy a probe if we use the lead fuel as he says it kills the probe. The C fuels have lead and are hi octane around 115-117 and low relative gravity.

I have downloaded the maps from V & H and also I have a U4 map from Larry E & Eagle which is apparently the one in the ECU at the moment.

I have access to either fuel but just want to make sure before I purchase either as the whole process takes a lot of effort with tuning to fuels etc.

Also are the stock Harley destroyer plugs the best option or is there a higher quality or better performing plug available?

I'm 170. If that is the only two fuels that you can get run the C25 it is the better of the two that you can get. U4 leaves a gummy film on your valves.

Scotty if you can get your hands on the next generation fuel VP U4.2 thats out, it no longer gums anything up. All of the past symtoms have been eliminated.

Google VP U4.2 you may be able to find a supplier in your area.

Before I made any purchases or went to far with the tuning I'd check to see if your racing governing body stipulates what race fuel you have to use so everyone is on the same page as far as performance? Are you planning on racing in the Destroyer class?

Here in the Destroyer class eveyone has to us the VP product. Hope this helps.

Pat.

Hi Pat,
No U4 or 4.2 here Pat unfortunately. VP only sells the unleaded series MS (motorsports) 103 & 109 or C 16 & C25 leaded fuel. I have quizzed VP and they think the MS109 would be the closest match to U4. I just wonder if the motor will be ok without lead. The MS109 is around $150 for 5 gal, the C25 is $400 for 5 gal, big difference :D

No VRD class here Pat, bracket racing here for "Modified Bike" DYO and a big mix of everything from Destroyers to Hayabusa to you name it they run it! There are some wild looking bikes and a few hill billy looking bikes as well but you cant discount any of them, some of them are tough competitors :deal:

Scotty if you can get your hands on the next generation fuel VP U4.2 thats out, it no longer gums anything up. All of the past symtoms have been eliminated.

Google VP U4.2 you may be able to find a supplier in your area.

Before I made any purchases or went to far with the tuning I'd check to see if your racing governing body stipulates what race fuel you have to use so everyone is on the same page as far as performance? Are you planning on racing in the Destroyer class?

Here in the Destroyer class eveyone has to us the VP product. Hope this helps.

Pat.

Only problem I have with C25 is the cost. Damn over double the cost of either the MS109 or C16! What adverse effects can the unleaded have? If you know. Thanks :thumb:

I'm 170. If that is the only two fuels that you can get run the C25 it is the better of the two that you can get. U4 leaves a gummy film on your valves.

Hi Scotty,
I'm a HEAVY rider @ 228lbs and that's before putting my leathers on!!!!
I've only managed 2 x 9's so far (9.87 & 9.88) @ around 132 mph.
I reckon myself lucky to get that considering my weight!
60' times of 1.45 & 1.46 although I did manage a 1.37 time with a 10.06 run.
Just for info & comparison with others I'm running:
Stock gearing.
Stock map.
Stock clutch setup. (tried medium statics but too much clutch slip)
U4.2 fuel. (data suggests too rich: running approx 11.9 -12.0 afr)
LB set @ 7500rpm so far but looks like I'll be increasing this on my next outing on 8/30
I'm lucky enough to have the Racepak system on it so I'm now trying to sort out the data to see if I can make it go any quicker.
By the way I'm based in England, UK.
All suggestions welcome and if I can help anyone I will.
Have Fun!

Interesting Hoss Man :D
Thanks

ttt