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Search: Posts Made By: DanMay
Forum: Airheads 03-16-2015, 04:43 PM
Replies: 14
Views: 640
Posted By DanMay
Vech has all the bits for the conversion. I was...

Vech has all the bits for the conversion. I was at his open house a few years ago, and he showed me the setup on his R26 (http://www.benchmarkworks.com/museum/bikes/1956r26.html). The Type 53 works...
Forum: Airheads 03-15-2015, 06:09 AM
Replies: 14
Views: 640
Posted By DanMay
Yes, that bike still hold the record in the...

Yes, that bike still hold the record in the Vintage (pre-1956) 250cc Production class. I ran another R25/3 in the modified class (with a type 53 Bing...) that had set a few records, but Kevin Brooks...
Forum: Airheads 03-14-2015, 11:14 AM
Replies: 14
Views: 640
Posted By DanMay
The Bing from a R50/5 or R60/5 works very well. ...

The Bing from a R50/5 or R60/5 works very well. You just need to buy a manifold and the cables. The manifold part number is 13 11 0 039 103.1 from Benchmarkworks.com .

Use the jetting specs...
Forum: Airheads 03-14-2015, 05:18 AM
Replies: 48
Views: 1,892
Posted By DanMay
FlexHone

Fyi, this is what FlexHone has to say about Nikasil.

http://www.flexhoneblog.com/2012/11/the-flex-hone-for-niaskil-engine.html?m=1
Forum: The Garage 03-07-2015, 09:01 AM
Replies: 1,798
Views: 372,750
Posted By DanMay
Optimate

Cy, based on your recommendations I purchased the Optimate Lithium Charger http://www.amazon.com/OptiMate-Lithium-battery-charger-maintainer/dp/B007GRGUJU/

I have been using it for the last year...
Forum: Airheads 12-23-2014, 11:02 AM
Replies: 359
Views: 39,984
Posted By DanMay
Ecta

The ECTA (East Coast Timing Association) has moved their events to Wilmington, OH USA (from Maxton, NC). The call it "The Ohio Mile".

We, like many others, use it as a "test and tune" facility...
Forum: Airheads 11-03-2014, 06:35 AM
Replies: 38
Views: 2,574
Posted By DanMay
And junk head gaskets. I learned the hard way on...

And junk head gaskets. I learned the hard way on both, and would only recommend OEM BMW seals and gaskets.
Forum: Airheads 10-05-2014, 07:38 AM
Replies: 32
Views: 1,912
Posted By DanMay
You can use one of these: ...

You can use one of these:

https://www.motoren-israel.com/product_info.php?info=p190_Gearbox-breather-pipe-instead-of-speedometer-cable.html&XTCsid=7018mcptj1ggpp748hrh1sfl12
Forum: Airheads 10-02-2014, 07:43 AM
Replies: 14
Views: 886
Posted By DanMay
I should have disclosed that my race bike has no...

I should have disclosed that my race bike has no front cover, and runs a total loss ignition, so there is *much* less to take apart and put back together.
Forum: Airheads 10-02-2014, 04:12 AM
Replies: 14
Views: 886
Posted By DanMay
Hey Keith, There are 2 seals under the timing...

Hey Keith,
There are 2 seals under the timing chain cover, 1 front crankshaft seal and 1 camshaft seal, and a timing cover gasket. If you pull the front cover off (the first cover, the one you pull...
Forum: Airheads 09-30-2014, 05:40 AM
Replies: 359
Views: 39,984
Posted By DanMay
Bonneville Weather

I hope you have better luck with the weather than we did in the USA this year. Nearly all the Bonneville events were rained out this year.
...
Forum: Airheads 08-30-2014, 05:49 AM
Replies: 31
Views: 3,391
Posted By DanMay
I had the exact same thing happen on my '74 R90S...

I had the exact same thing happen on my '74 R90S a few years back. Sheared all the 10mm flywheel bolts, and trashed the flywheel and crankshaft in the process.

I ended up replacing the 10mm...
Forum: Airheads 08-05-2014, 09:26 AM
Replies: 166
Views: 17,584
Posted By DanMay
Crankshaft HP vs Rear Wheel HP

If I am not mistaken, Edelweiss-Motorsport does an adjustment to convert measured RWHP (rear wheel horse power) to crankshaft HP. All factory BMW specs are crankshaft HP, where most tuners and...
Forum: Airheads 07-27-2014, 06:35 AM
Replies: 14
Views: 1,387
Posted By DanMay
R65ls

I am running a damper on my 1982 R65LS.

The damper that fits the R65 is the NHK ODM500:

http://www.fastfromthepast.com/servlet/the-1004/Steering-Damper-Stroke%3D85mm-/D......
Forum: Airheads 05-29-2014, 05:41 AM
Replies: 18
Views: 1,420
Posted By DanMay
Cheap /7 gas cap solution

If you are looking for a /7 style screw in cap on the cheap, these work:

http://www.amazon.com/Stant-11817-Fuel-Tank-Cap/dp/B000BKIH90...
Forum: Airheads 05-17-2014, 08:48 AM
Replies: 359
Views: 39,984
Posted By DanMay
Fuel

I will be interested to see where you end up with on your ignition timing and the highest available octane pump gas. With your piston and squish band design hopefully the pump gasoline will support...
Forum: Airheads 05-17-2014, 05:22 AM
Replies: 359
Views: 39,984
Posted By DanMay
Fuel

Have you thought about what fuel you will be running ?

For the gas classes, we ran the legal lower octane mix provided by the Bonneville supplier. Our compression was only about 10.5 to 1, so we...
Forum: Airheads 02-04-2014, 05:18 PM
Replies: 359
Views: 39,984
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: 359
Views: 39,984
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: 359
Views: 39,984
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: 1,798
Views: 372,750
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: 4,460
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: 472
Posted By DanMay
Thanks Anton. Dan

Thanks Anton.

Dan
Forum: Airheads 12-22-2013, 03:22 PM
Replies: 2
Views: 472
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: 1,733
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: 1,733
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: 1,733
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: 1,733
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: 1,733
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: 1,798
Views: 372,750
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: 1,798
Views: 372,750
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: 1,798
Views: 372,750
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: 1,798
Views: 372,750
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: 1,798
Views: 372,750
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: 1,320
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: 2,790
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: 1,320
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: 1,798
Views: 372,750
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: 1,798
Views: 372,750
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: 573
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
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