IronDieselButt

TimppaX · Post by **TimppaX** » Sun Dec 02, 2007 8:34 pm

It needs dedicated finn and diesel powered sidecar Dnepr to make BB1500 drive

Snip from Iron Butt Association of Finland´s web site:

Isosalo Juha 2558 km 1590 ml 6.7.2007 Dnepr 900 Sidecar Diesel

Kubota diesel + modified transmission gave enough speed. Yet no idea of fuel consumption.

oilburner · Post by **oilburner** » Mon Dec 03, 2007 4:58 pm

Hopefully we will see some pictures and learn more about the engine and gearing. With the Kubota engine installation the Dnepr will probably weigh around 800 lbs.

Here's what I suspect: A 900cc Kubota puts out about 25hp maximum. At 3600 RPM the engine would be *theoretically* capable of about 60 mph with the standard 4.62 final drive and about 70 mph with 3.89 gearing, using a custom gearbox primary shaft for a 1:1 gearbox ratio. The custom gearbox stuff is shown on the motopan website:
http://www.motopan.com.ua/foru/korobka_e.htm

Years ago I installed a complete 750cc BMW drivetrain with a 3.89 final drive in a Dnepr. The stock engine put out 30 hp at 50 mph and it was no speed demon. Later I installed a factory Sport camshaft which made a huge difference

A sidecar outfit requires a lot more power than a solo motorcycle once you go over 45 - 50 mph.

TimppaX · Post by **TimppaX** » Mon Dec 03, 2007 6:30 pm

those imperial numbers keep confusing me, but here comes some details in metric scale:

Runs 95km/h @3500rpm

Kubota is 900cc

Final drive is 10/35

I´ll post more details as I get them

oilburner · Post by **oilburner** » Mon Dec 03, 2007 9:51 pm

I know what you mean about imperial vs metric. Here in Canada we switched to metric in 1975 and I've been confused ever since

95 km/h @ 3500 rpm is 59 mph which is what you would get with the 10/35 final drive and the stock 1.3:1 gearbox. The 10/35 final drive is interesting - I didn't know there was such a thing. This would probably be of interest to others with diesel powered Dneprs.

Avery

TimppaX · Post by **TimppaX** » Tue Dec 04, 2007 11:28 am

I can easily handle distances either in feets or meters as inches and centimetres but never do remember miles vs kilometres.

Also why report fuel consumption in mpg instead litres/100km?

Anyhow:

Parts are partly custom made in Finland or original custom parts from russia/ukraine.

Gearbox wasn´t either stock. 3rd & 4th drives were modified a lot.

Wheels are standard 19"

oldbmw · Post by **oldbmw** » Tue Dec 04, 2007 8:36 pm

TimppaX wrote:
Also why report fuel consumption in mpg instead litres/100km?

I can never do the litres 100 km thing, why not km per litre ???

certainly gallons to teh 100 miles is very odd.

I will go metric when teh french do.. and that will be never.
they will have to changetheir language to go metric, and stop selling wine and eggs in crates of a dozen ( without using the buy ten and get two free trick)

sbrumby · Post by **sbrumby** » Tue Dec 04, 2007 9:04 pm

I dont know what you find so difficult about the imperial system.
Wheels are measured in inches far easier than them millimeters things.
I will try to explain,
4gills=1pint, 2pints=1quart,4quarts or 8pints=1gallon. 2gallons=1peck,
4pecks=1bushel,8bushels=1quarter.
12lines=1inch.12inches=1foot.3feet=1yard.5 1/2 yards=1pole or perch.
22yards=1chain.10chains or 40poles or220yards=1furlong.8furlongs or 1760yards =1mile. 3miles or 5280yards=1league.
What can be easier than that.

TimppaX · Post by **TimppaX** » Wed Dec 05, 2007 11:57 am

I´m into measuring blackpowder in grains, instead grams due accuracy + most of reloading manuals handle weight in grains. I have electronic precision scale and metric vs imperial is just one buttobpress away.

Oddity is to base measuring other than 10-base scale. Most of us have 10 digits. Imperial lenght measures are mostly based on body measures of a widely respected person. Ie 1" is measured from thumb foot was lenght of emperor´s own foot etc etc.

oldbmw · Post by **oldbmw** » Wed Dec 05, 2007 11:57 pm

TimppaX wrote:I´m into measuring blackpowder in grains, instead grams due accuracy + most of reloading manuals handle weight in grains. I have electronic precision scale and metric vs imperial is just one buttobpress away.

Oddity is to base measuring other than 10-base scale. Most of us have 10 digits. Imperial lenght measures are mostly based on body measures of a widely respected person. Ie 1" is measured from thumb foot was lenght of emperor´s own foot etc etc.

There is some evidence to suggest that North Indian and europeans originally counted to base 12. Virtually all those languages have single words for the first 12 numbers. Certainly in India , most who count regularly will use base 12. If you look at your left hand palm towards you, you can count the 12 segments of your four fingers, Once you get to 12 you can carry over to your right hand. thus counting up to a maximum of 156 on both hands.

TimppaX · Post by **TimppaX** » Thu Dec 06, 2007 11:03 am

Also somewhere in the pacific are tribes known to have numbers from 1 to 3 and everythin else is considered just to be more. Somewhere in Africa too?

But back to topic:

Jus had loooong conversation over phone with a guy whose bike that was:

Gearbox is standard(!) Dnepr gearbox with reverse. Job was done with customized final drive to the ratio calculated to achieve 95km/h.

Consumption was, according preliminary data, around 22,22km/litre, ie 4,5l/100km. This data is only preliminary.

During the drive itself there was heavy rain, nearly all the time.

Driver stated that without sidecar this kind of drive is unpossible due fatique and weather conditions.

Technical problems: None
Wear and maintenance: One rear wheel, no added oil.

I`ll have to wait for final data & photos.

TimppaX · Post by **TimppaX** » Sat Dec 08, 2007 2:28 pm

more small details:

Engine was slightly tuned as injectionpump was adjusted in order to get some more rpm.

Wheels were 4.00/19 just to gain some extra speed.

Consumption average, now final numbers: 4,966l/100km

Still waiting for pics.

oilburner · Post by **oilburner** » Sat Dec 08, 2007 9:34 pm

For those of us who are metrically challenged, 4,966 litres / 100 km works out to:

1.092 imperial gallons/62.137 miles = 56.9 miles per imperial gallon

1.311 us gallons/62.137 miles = 47.3 miles per US gallon

This is better than you can normally achieve with an equivalent weight gasoline powered sidecar outfit when riding at 95 km/h (59 mph). I averaged 42 imp. mpg (6.7litres/100km) with my BMW 750cc boxer powered Dnepr and a friend averaged 45 imp. mpg (6.3litres/100km) with a dual plugged BMW 750cc boxer sidecar outfit on a 600 mile ride at an average of 90 km/h (56 mph) .

Avery

TimppaX · Post by **TimppaX** » Sun Dec 09, 2007 11:03 am

Most of the ride speed was near top max 95.

Normally that bike runs well under 4l/100km with sidecar + occasional load.

Now there´s chance for someone to do the same ride with passenger in the sidecar?

TimppaX · Post by **TimppaX** » Wed Dec 19, 2007 12:08 pm

Shots:

oilburner · Post by **oilburner** » Fri Dec 28, 2007 9:26 pm

I found a supplier of the 10/35 final drive gears, the same ratio as used in the Iron Butt Dnepr. They are available from F2 Motorcycles Ltd. for £90.00. The gearset is shown on their web page:
http://www.f2motorcycles.ltd.uk/dneprupgrades.html

It would be interesting to know who the manufacturer is to get an idea of the quality.

As stated by TimPax, this setup is good for about 95 km/h (about 60 mph). Add a modified 4th gear set (various ratios available) from Motopan and you could get a theoretical 128 km/h (78 mph) @ 3600 rpm from your Dnepr.
http://www.motopan.com.ua/foru/korobka_e.htm

Avery