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Search: Posts Made By: DanMay
Forum: Airheads 02-04-2014, 05:18 PM
Replies: 60
Views: 4,676
Posted By DanMay
Three of us rode 2 bikes, both R25/3's. Rebecca...

Three of us rode 2 bikes, both R25/3's. Rebecca (in the picture above) did a great write up of the adventure. You can read about it here:...
Forum: Airheads 02-04-2014, 01:37 PM
Replies: 60
Views: 4,676
Posted By DanMay
Our adventures on the salt were at much slower...

Our adventures on the salt were at much slower speeds, but we still managed to grab a few records in the 250cc Vintage class.

Here are some pictures:

...
Forum: Airheads 02-04-2014, 06:45 AM
Replies: 60
Views: 4,676
Posted By DanMay
Just so you know for future reference, you can...

Just so you know for future reference, you can buy a 2.75 gear set from BMW:

33 12 1 233 905 SET: CROWNGEAR SET - I=33:12=2,75 5.19 1 $444.46

But it sounds like you have it worked...
Forum: The Garage 01-09-2014, 11:06 AM
Replies: 1,253
Views: 189,796
Posted By DanMay
Is the Earth-X the only battery that has a built...

Is the Earth-X the only battery that has a built in Battery Management System (BMS) ? Will the Earth-X BMS really prevent over disharge and save the cells ? In my opinion, this is the fatal flaw in...
Forum: Airheads 12-23-2013, 11:55 AM
Replies: 31
Views: 3,106
Posted By DanMay
The 750 cylinders have a "7" stamped on the left...

The 750 cylinders have a "7" stamped on the left top near the crankcase.
The 600 cylinders have a "6", the 500's a "5", and the 900's a "9".

The 500 and 600 cylinders have a smaller intake...
Forum: Airheads 12-22-2013, 06:53 PM
Replies: 2
Views: 320
Posted By DanMay
Thanks Anton. Dan

Thanks Anton.

Dan
Forum: Airheads 12-22-2013, 03:22 PM
Replies: 2
Views: 320
Posted By DanMay
1983 R65LS Final Drive w/ zerk grease fitting

I recently picked up a 1983 R65LS and was going though the normal maintenance and fluid changes. When I got to the final drive, I found a zerk grease fitting where the oil level fill bolt usually is....
Forum: Airheads 10-15-2013, 07:54 PM
Replies: 20
Views: 1,061
Posted By DanMay
Sorry, but I need to clear up some details that I...

Sorry, but I need to clear up some details that I thought were not important. It actually is a /6 rear wheel, that I have been running all season. I started the season with a 31/9 final drive, but...
Forum: Airheads 10-15-2013, 01:15 PM
Replies: 20
Views: 1,061
Posted By DanMay
I am in the USA, Chicago. I say it was a R45...

I am in the USA, Chicago. I say it was a R45 final drive because it is a 34/8 ratio. It bolted right on, and looked just like the 32/9 I replaced. A friend picked up the 34/8 on ebay, I assume it...
Forum: Airheads 10-15-2013, 09:47 AM
Replies: 20
Views: 1,061
Posted By DanMay
I forgot to ask another question. What final...

I forgot to ask another question. What final drives will work with a SWB /5 ? I noticed some of the later final drive cases are designed different, but seem to carry the same part number. Will any...
Forum: Airheads 10-15-2013, 05:44 AM
Replies: 20
Views: 1,061
Posted By DanMay
Sorry about that, it was not intentional. ...

Sorry about that, it was not intentional.

When the drive failed, it felt like a slipping clutch. In 3rd and 4th gear it would slip when accelerating. I was able to drive it off the track, but...
Forum: Airheads 10-14-2013, 03:16 PM
Replies: 20
Views: 1,061
Posted By DanMay
Final drive ring gear failure

I had the ring gear fail on my final drive this weekend at the Barber Vintage Festival AHRMA races. The weld that holds the wheel spline shaft to the pinion gear appears to have failed, allowing the...
Forum: The Garage 09-27-2013, 12:11 PM
Replies: 1,253
Views: 189,796
Posted By DanMay
Optimate Lithium LiFePO4 charger

Cy, Are you still recommending the Optimate Lithium LiFePO4 charger ? I am running both the Ballistic and Shorai batteries in race bikes on a total loss system. I am looking for a good charger that...
Forum: The Garage 09-18-2013, 09:20 AM
Replies: 1,253
Views: 189,796
Posted By DanMay
As I mentioned above, the bike was a vintage...

As I mentioned above, the bike was a vintage Honda Hawk (305cc CB77). The battery was purchased directly from the Earth-X web site in the last few months. It only spent 16 miles in the bike. Earth-X...
Forum: The Garage 09-18-2013, 08:54 AM
Replies: 1,253
Views: 189,796
Posted By DanMay
Fire in the Hole ! (Earth-X)

I have never had one do this on any of my bikes. I have run the Shorai and Balistic without any explosions. This was not my bike, but a friends. It was on a vintage Honda (60's Hawk ). It must...
Forum: The Garage 09-18-2013, 08:48 AM
Replies: 1,253
Views: 189,796
Posted By DanMay
Fire in the Hole ! (Earth-X)

Thanks Mike for embedding the photos. I could not figure it out with Google+ and Picasa. We had a group ride this weekend, and this came out of one of the bikes. A bit scary. The battery was...
Forum: The Garage 09-18-2013, 07:12 AM
Replies: 1,253
Views: 189,796
Posted By DanMay
Fire in the Hole ! (Earth-X)

I think this one needs to go back to the manufacturer.

https://plus.google.com/photos/114008494495489849005/albums/5924964041288937521
Forum: Airheads 08-10-2013, 08:31 AM
Replies: 8
Views: 781
Posted By DanMay
Thanks, that is the information I was looking for.

Thanks, that is the information I was looking for.
Forum: Airheads 08-09-2013, 12:51 PM
Replies: 30
Views: 1,500
Posted By DanMay
R75/6 to R90s oil levels

Support from BMW as to why you should not fill your oil level to the “Full” line, and only fill it up to ˝ inch below the “Full” line on the dip stick.
...
Forum: Airheads 08-09-2013, 12:14 PM
Replies: 8
Views: 781
Posted By DanMay
Flywheel Timing Marks

Can someone tell me at what degree the S and F timing marks should be on a /5 and /6 10mm bolt Flywheel ? I am comparing a R50/5 and R60/6 flywheel, and the F marks are at different locations. The...
Forum: The Garage 05-29-2013, 04:10 PM
Replies: 1,253
Views: 189,796
Posted By DanMay
Shorai BMS - Will it work on the Ballistic ?

I took a shot and the Shorai BMS charger does work on the Ballistic. Since the pins were identical in voltage readings when testing the individual cells, and the adapter was identical, I took the...
Forum: The Garage 05-29-2013, 02:53 PM
Replies: 1,253
Views: 189,796
Posted By DanMay
Shorai BMS - Will it work on the Ballistic ?

I have a Shorai LFX09L2-BS12 that I use in a total loss, race bike application. I use the Shorai BMS charger to charge it. I also have a Ballistic 4 Cell EVO 2 battery that I use as a back up. I...
Forum: Airheads 04-29-2013, 06:12 AM
Replies: 4
Views: 445
Posted By DanMay
Mine is missing all together. I ordered the...

Mine is missing all together. I ordered the Stant 11817 Fuel Tank Cap .

It was under $7.00 USD from Amazon.com. I will see how it looks and fits.

Daniel
Forum: Airheads 04-28-2013, 10:46 AM
Replies: 4
Views: 445
Posted By DanMay
Thanks, I will check it out. Daniel

Thanks, I will check it out.

Daniel
Forum: Airheads 04-27-2013, 03:49 PM
Replies: 4
Views: 445
Posted By DanMay
/7 and later screw in gas cap replacement

Does anyone know of an aftermarket gas cap for the /7 and later screw in type gas cap ? I am looking for an alternative to the OEM part number 51 25 2 307 125 and do not care about originality or...
Forum: Airheads 12-30-2012, 11:43 AM
Replies: 116
Views: 11,035
Posted By DanMay
New 336° cam from BMW

I need to keep it legal, 500cc max. With a R50/5 bottom end, pistons, and jugs, can you use R60/5/6 heads ? Would the larger valves help or hinder the performance ? Or would it be better off sticking...
Forum: Airheads 12-30-2012, 10:36 AM
Replies: 116
Views: 11,035
Posted By DanMay
New 336° cam from BMW

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Ha ! I wish. I run in AHRMA Production Lightweight , and I must keep the same stroke and bore...
Forum: Airheads 12-30-2012, 06:07 AM
Replies: 116
Views: 11,035
Posted By DanMay
New 336° cam from BMW

How did the 336 work out in your 500cc race motor ? I am interested in your experience, and curious if the smaller displacement and valve size will benefit from the 336 profile. I am currently racing...
Forum: Airheads 08-14-2012, 08:13 AM
Replies: 10
Views: 803
Posted By DanMay
I found this @...

I found this @ http://www.advrider.com/forums/showpost.php?p=18778729&postcount=44



and later, this



So I am going to give it a try.
Forum: Airheads 08-14-2012, 05:49 AM
Replies: 10
Views: 803
Posted By DanMay
70 & 74 bottom ends

Is it possible to use a 11 mm bolt style flywheel on a 10 mm style crankshaft ? I am in the process of replacing the clutch on my R50/5 race bike, and I have a 11 mm lightened flywheel I would like...
Forum: Airheads 08-09-2012, 06:02 AM
Replies: 270
Views: 26,526
Posted By DanMay
The building of my vintage racer

Here are a few pics of my R50/5 AHRMA racer. I picked it up last winter and have beeing running it this year in AHRMA Production Lightweight.


Grattan Raceway in Michigan...
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