Homemade buggy with Lifan 15 l/s engine
The front suspension is double wishbone on shock absorbers from the Voskhod motorcycle. VAZ 2108 hubs and ball joints, homemade A-shaped suspension arms are welded from a square profile.
Author: Eruslanov Alexander
And so, let's look at the technical features of the presented homemade buggy.
Materials
Tools
Step-by-step photos of assembling a buggy with your own hands.
Shock absorbers motorcycle "Voskhod" 4 pcs
VAZ hubs
Calculation of gear ratio reduction.
A-shaped suspension arms.
Buggy suspension A-shaped double wishbone (homemade) with hubs and ball VAZ
Installing the suspension on the frame. Steering VAZ
The rear suspension is pendulum type.
Attaching the pilot's seat to the vehicle frame.
The bottom is welded with sheet metal.
Site for installation of internal combustion engines. Priming and painting of the frame and suspension elements of the buggy.
Source
Tricycle with Chinese engine
Hi all! As you already understood from the title, this article will focus on a tricycle with a Chinese Forza engine (similar to Lifan). Initially, the tricycle was made from a Ural motorcycle, which is discussed in detail in the article of the same name. Here we will consider the process of installing the engine, connecting it to the Zhiguli gearbox, preparing the mount for all this, and related issues. So, let's begin.
If you don’t want to read a lot, there is a video whose content is similar to the article:
Why is all this needed?
The answer to this logical question follows from the shortcomings of the native Ural engine and transmission. Namely:
It seems like little things, especially considering that the trike has never seriously let us down, but it would have been better without them.
Plus, it was just interesting to cross a Chinese engine with a classic gearbox. It was interesting what would come of it. And it turned out quite well.
A few words about the engine
Initially, it was planned to install exclusively a 15-horsepower Lifan with a reduction gearbox and automatic clutch. But the practice of using a trike in the forest has shown that the average speed of movement rarely exceeds 25-30 km/h. Due to the fact that all the roads are overgrown or swamped, traveling at high speed is either impossible, uncomfortable and even dangerous. Therefore, it was decided to go with the Lifan engine with a power of 6.5 horsepower, also with a reduction gearbox and automatic clutch. It cost 2 times less than the 15-horsepower one, plus I had a little experience in operating this particular engine and confidence in its reliability. An acquaintance drove a motorized towing vehicle with such an engine for several seasons under very harsh use. What I wasn't sure about was whether 6.5 horsepower would be enough for a tricycle weighing about half a ton. Looking ahead, I will say that it was quite enough.
Forza engine - analogue of Lifan
It so happened that the seller did not have the 6.5-horsepower Lifan with the required shaft diameter for the gearbox, but there was a FORZA engine similar to it, which, in addition, cost a thousand rubles less. The characteristics are the same, the dimensions are the same, time will tell in terms of quality and reliability, fortunately there is a one-year warranty. Everything (motor and gearbox) cost about 9,500 rubles.
It was immediately decided to use the box from the classics. We found an old but working 4-mortar on Avito for only 1,200 rubles. These boxes are very reliable, I think it is the most durable component of the tricycle.
How to connect the engine to the gearbox
Everything is simple here, with the help of stars and a chain. I had to tinker a little with the star on the box. The splined part from the Zhiguli clutch disc was machined for it and simply welded into the star. In this way, the star was easily put on the input shaft of the box, which, in addition, was inserted into an additional bearing outside the box.
Connecting the engine to the gearbox
In our case, the box shaft rotates in the opposite direction, because The bridge was upside down and I didn’t want to re-weld the fastenings. Plus, with this rotation, the layout turned out to be the simplest and most compact. As for the cardan, on the side of the bridge there is a regular crosspiece, and on the side of the box there is a native Zhiguli rubber coupling. Everything works great.
In general, the frame remained unchanged, with the exception of its upper part. To place the engine approximately in the center, I had to cut out the top part of the frame and weld a kind of frame in its place.
Exhaust system
The original exhaust of the Chinese engine was not satisfactory due to the high volume and smell of exhaust gases. This is because the muffler was almost in front of my face. So an elbow was welded and connected to the old trike muffler mounted higher up on the other side.
Homemade muffler for a Chinese engine
Tricycle with Chinese engine. Part 2 - Finalization of the design
Hi all! Now the time has come to remove the Chinese Forza engine from the motorized towing vehicle and install it back on the trike, which was discussed in detail in this article. Along with this, some changes were made to the design of the tricycle, which will be discussed in this article. So, let's start with the basics...
If you don’t want to read, you can watch the following video, which repeats the meaning of the article:
It was decided to weld the front part of the trike frame for a more comfortable position for the driver. Before this, the too wide square frame on top was a bit of a nuisance to the legs, and also looked “not very good.”
Result
The trike turned out to be quite suitable for use. Of course, there cannot be special dynamics with such power, and it is not needed. As I already said, the average speed in the forest rarely exceeds 25-30 km/h, and even then on a relatively flat surface. The power of this engine is enough to confidently maintain a speed of around 20-25 km/h in 4th gear. Then there just isn't enough momentum. I'm thinking of increasing the maximum speed with the help of stars. Now with 15 teeth on the motor and 35 teeth on the gearbox, the speed is as follows:
As for traction, there is plenty of it. The trike pulls away easily even in third gear. It’s possible in fourth, but there’s already a load on the engine and clutch.
In general, the power of this engine is quite enough for confident off-road movement, and thanks to the good “lowering” and reverse gear, the cross-country ability has increased noticeably.
Additional tips and warnings about the mini tractor
If you have a sufficient amount of money, then you can buy some old Zhiguli, Oka, walk-behind tractor to use it as a “donor” for a future homemade mini tractor.
You can purchase it without documents, and it’s quite used, so its cost will be approximately 25-30 thousand rubles, which is relatively little compared to a ready-made mini tractor.
The essence of this advice is simple: in order not to look for spare parts and parts everywhere, you can take everything from one machine, i.e. gearbox, clutch, etc. By the way, the car body can then be sold.
Also important is the registration of a home-made unit with the traffic police. Of course, you don’t have to do it if you don’t plan to travel outside your garden, but for those who plan to use public roads, this action is necessary.
The fact is that a minitractor, even a homemade one, is classified as special equipment, and therefore requires mandatory registration with the inspectorate. If you do not comply with these rules, the employee may impose a fine on you, and the vehicle itself may be removed to the impound lot.
Tricycle with Chinese engine: 2 comments
zdrastvujte, po moimu, jesli ustanovite drugije zviozdacki, srzazu izceznet vsie chorosyje kacestva etogo, eee, transportnogo sredstva
